1
Published: 1931
Superior document: Bulletin / Agricultural Experiment Station / University of California, Division of Agricultural Sciences 509
2
Published: ©, 1966
3
Published: 1998.
Superior document: Wiley Series in Probability and Statistics
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4
Published: 2012.
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5
Published: 2001,, c2000.
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6
Published: 2014.
Superior document: Educational Futures, Rethinking Theory and Practice , 62